Using machine learning to correct model error in data assimilation and forecast applications

A Farchi, P Laloyaux, M Bonavita… - Quarterly Journal of the …, 2021 - Wiley Online Library
The idea of using machine learning (ML) methods to reconstruct the dynamics of a system is
the topic of recent studies in the geosciences, in which the key output is a surrogate model …

Machine learning for model error inference and correction

M Bonavita, P Laloyaux - Journal of Advances in Modeling …, 2020 - Wiley Online Library
Abstract Model error is one of the main obstacles to improved accuracy and reliability in
numerical weather prediction (NWP) and climate prediction conducted with state‐of‐the‐art …

The Navy's Earth System Prediction Capability: A new global coupled atmosphere‐ocean‐sea ice prediction system designed for daily to subseasonal forecasting

N Barton, EJ Metzger, CA Reynolds… - Earth and Space …, 2021 - Wiley Online Library
This paper describes the new global Navy Earth System Prediction Capability (Navy‐ESPC)
coupled atmosphere‐ocean‐sea ice prediction system developed at the Naval Research …

Deep learning of systematic sea ice model errors from data assimilation increments

W Gregory, M Bushuk, A Adcroft… - Journal of Advances …, 2023 - Wiley Online Library
Data assimilation is often viewed as a framework for correcting short‐term error growth in
dynamical climate model forecasts. When viewed on the time scales of climate however …

Online model error correction with neural networks in the incremental 4D‐Var framework

A Farchi, M Chrust, M Bocquet… - Journal of Advances …, 2023 - Wiley Online Library
Recent studies have demonstrated that it is possible to combine machine learning with data
assimilation to reconstruct the dynamics of a physical model partially and imperfectly …

Met Office MOGREPS‐G initialisation using an ensemble of hybrid four‐dimensional ensemble variational (En‐4DEnVar) data assimilations

GW Inverarity, WJ Tennant, L Anton… - Quarterly Journal of …, 2023 - Wiley Online Library
Abstract The Met Office Global and Regional Ensemble Prediction System–Global
(MOGREPS‐G) used an ensemble transform Kalman filter (ETKF) to perturb its initial …

Correcting systematic and state‐dependent errors in the NOAA FV3‐GFS using neural networks

TC Chen, SG Penny, JS Whitaker… - Journal of Advances …, 2022 - Wiley Online Library
Weather forecasts made with imperfect models contain state‐dependent errors. Data
assimilation (DA) partially corrects these errors with new information from observations. As …

Adaptive tuning of uncertain parameters in a numerical weather prediction model based upon data assimilation

G Zängl - Quarterly Journal of the Royal Meteorological Society, 2023 - Wiley Online Library
In numerical weather prediction models, near‐surface quantities like 10‐m wind speed
(FF10M) or 2‐m temperature (T2M) tend to exhibit significantly larger forecast errors than the …

Deterministic and stochastic tendency adjustments derived from data assimilation and nudging

WE Chapman, J Berner - Quarterly Journal of the Royal …, 2024 - Wiley Online Library
We develop and compare model‐error representation schemes derived from data
assimilation increments and nudging tendencies in multidecadal simulations of the …

A hybrid physics–ai model to improve hydrological forecasts

Y Duan, S Akula, S Kumar, W Lee… - … Intelligence for the …, 2023 - journals.ametsoc.org
Abstract The National Oceanic and Atmospheric Administration has developed a very high-
resolution streamflow forecast using National Water Model (NWM) for 2.7 million stream …